کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11463285 | 1462473 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cycle improvement and hydrogen steam superheating at Mutnovsky geothermal power plant
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study is aimed at a possibility of hydrogen production and hydrogen steam superheating at a single-flash 50â¯MW Mutnovsky geothermal power plant stage 1. A modification by introduction of a low-pressure single-flash unit utilizing energy of the separated liquid is proposed, and the integrated single- and double-flash cycle is analyzed. The second flash process gives a maximum possible increase of the installed capacity on 11.1â¯MW for the flash temperature of 92â¯Â°C, and 9â¯MW for 120â¯Â°C. Currently the plant does not use 12.3% of the geothermal steam for electricity generation, partly due to demand side management from a grid operator. Excess power can be used for water electrolysis and for each 1% of saved steam 92â¯t of H2 can be produced annually. Hydrogen combustion in a high temperature hydrogen-oxygen steam generator can be used for steam superheating in a second flash process, achieving the increase of steam temperature at the low pressure turbine inlet by 20-30â¯K, and an increase of steam dryness at the turbine outlet by 2-4%. Additional available power rises by 5-10% (0.5-0.9â¯MW) and overall thermal efficiency of the plant can be increased from 10% to 12.5%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Case Studies in Thermal Engineering - Volume 12, September 2018, Pages 736-741
Journal: Case Studies in Thermal Engineering - Volume 12, September 2018, Pages 736-741
نویسندگان
D.O. Dunikov,